Bad Vibrational Frequency Predictions

The following tables list the number of molecules for a model chemistry with the following constaints:
The absolute value of the difference between the experimental and calculated frequencies is greater than 400 cm-1 OR
The ratio of the experimental and calculated freqeuncies is outside the range of 0.7 to 1.2

Click on an entry for the list of the molecules and the poorly predicted vibrational modes.